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The complete paper presents the results of evaluation of laboratory and demonstration trials of HDPE liner to mitigate premature failures and prolong the run life of production tubing. Corrosion inhibitors are often the first line of defense against internal corrosion, and effective mitigation relies on proactive monitoring and management of these inhibitors to allow for regular feedback and dose adjustment. This paper describes a novel method of chemical dosage based on time-resolved fluorescence (TRF) that allows a simple, accurate, and efficient quantification of chemicals below parts-per-million ranges, even for double (scale/scale, scale/corrosion) quantification. A study done to find the root cause of coiled tubing string failures in Montney indicated microbial-induced corrosion, leading the CT service provider to create a biocide treatment program. Rigless coiled-tubing-unit (CTU) interventions can be effective in returning to production wells that have lost electrical-submersible-pump (ESP) efficiency because of organic, inorganic, or mixed scale deposits.
This paper reviews the mechanisms of initiation and the prevention of top-of-the-line corrosion (TLC). Recent research and developments are highlighted and validated to arrive at best practices for control of this significant corrosion manifestation. Water condensation and/or hydrate formation at the top of pipelines are serious design/operation considerations in pipelines. This paper reports the results of tests conducted in a new experimental setup constructed for investigating gas-hydrate risks in varied operational scenarios.
Approved in October, the Flow Measurement Technical Section will help engage the greater SPE technical community in flow-measurement-related issues and technologies. It will cover the full spectrum of flow measurement, including single-phase and multiphase flow. At a water treatment plant for an onshore oil field in northern Germany, formaldehyde injection was started in 2015 as a biocide. The goal of this study was to understand the chemical parameters and microbial distribution in the water system and whether formaldehyde injection was effective. To facilitate testing and comparison of products that attenuate microbially influenced corrosion under field conditions, a method using microorganisms from a low-tide, anoxic North Sea sample was developed that allows corrosion measurements to be made for corroding biofilms grown on steel surfaces.
Two intelligence groups share similar views on how the fallout from the COVID-19 pandemic has impacted OFS companies’ valuations and operations. What are the impacts of the energy crunch on OCTG demand? Ardyne’s North Sea long-term contracts were for 175 wells with possibly more to follow, while Allseas contract is for removal and disposal for the Valhall complex. The data-driven maintenance program incorporates riser condition, usage, and fatigue analysis with a risk-based inspection process. InterMoor will support Neodrill with project execution, installation services, and business development of its conductor anchor node technology.
McDermott’s completion comes 19 months after it was first awarded. SapuraOMV achieved first production from the Larak gas field in January. Material selection is a first line of defense against corrosion. This article reviews how to recognize pitting and crevice corrosion, as well as how to optimize tubing material selections for marine oil and gas applications based on the material’s PREN value. The methodology is the industry’s first to address CUI.
Thank you for attending the SPE Symposium. As projects require significant capital investment over long timeframes, the consistent application of sound engineering principles through the life cycle of a well must continue even during commodity price cycles. Through the progression of new technology and the practical sharing of ideas among participants, the industry will improve the collective recovery, efficiency, longevity, and liability of existing and planned thermal wells.
This course is an introduction to well integrity, its history, its barriers and how to apply it to wells using guidelines, standards and regulations. Following the material selection process, it goes into well construction, completion concepts and Christmas trees. Several concepts will be introduced including well operating envelope description, well handover and operate phase, well problems, change management, case studies and well abandonment. The practical course looks at a wide range of well issues and is based on the instructor's global experience. Attendees will be able to understand well problems, understand the value of data in the diagnosis and solution process, use a range of tools and techniques that will provide support for risk assessments and solutions, and deal with problems in a cost effective way.
The course focuses on challenges and issues of proper isolation in wells with specific interest in finding weaknesses in well construction prior to creating problems during perforating, acidizing, fracturing or other high pressure operations. Case histories are used to illustrate warning "flags" of well damage or weaknesses created by such factors as corrosion, erosion, explosive stress loads, packer setting, drilling wear, differential pressure, various chemical attacks, thermal effects, cement failure and other conditions. Problem avoidance will be emphasized. Identification of main well failure problems with cause and typical extent of problems Warning "flags" common to most damage causes Workable and non-workable repair approaches Pressure test types, extent and what they do and do not identify Monitoring methods for stimulations Ability to identify wells that may not be candidates for well stimulation or restimulation can prevent both economic and especially environmental problems. These problems are often evident by quick screening, even by non-specialists.
Over the course, attendees will have the opportunity to participate and understand the important role they play in the well life cycle and how early interaction and collaboration impacts operations, economics, risk, safety and ultimately abandonment. Delegates will leave with a better understanding of how important sharing information about a well's construction and operation can be, and how critical it is to document how the well operates and particularly any characteristics that are shown when the well is operating out of character. Introduction to well integrity Guidelines and standards Lets' construct a well Annular pressure management Attendees do not require any tools for this course but a basic understanding of how a well is constructed and then operates as a producer or injector is very beneficial. This highly visual and interactive training welcomes delegate participation and questions. Delegates will leave with a better understanding of how important sharing information about a wells construction and operation can be, and how critical it is to document how the well operates and particularly any characteristics that are shown when the well is operating out of character.